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Posted to commits@pinot.apache.org by "somandal (via GitHub)" <gi...@apache.org> on 2023/04/05 20:06:24 UTC
[GitHub] [pinot] somandal commented on issue #10555: [multistage] perf regression on ORDER BY queries
somandal commented on issue #10555:
URL: https://github.com/apache/pinot/issues/10555#issuecomment-1498059261
Some logs for the testing done to identify the RC:
One example Send <-> Receive interaction:
```
Sending data block: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}, split: 0
Sending data block: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}, split: 1
sending EOS mailbox id: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}
...
Time to add 7182 elements to priority queue: 2, time since start of operator: 513, mailbox: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}
openmailbox count: 1, eosMailboxCount: 0, returning block type: noop
Time to add 2818 elements to priority queue: 1, time since start of operator: 519, mailbox: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}
openmailbox count: 1, eosMailboxCount: 0, returning block type: noop
EOS received after since operator creation: (time to receive: 16545) mailbox: {"jobId":"4_2","from":"0@localhost:8422","to":"0@localhost:8422","senderStageId":2,"receiverStageId":1}
Sorted block construction took: 7, total time to sort data: 16552, openmailbox: 1, eosmailboxcount: 1
openmailbox count: 0, eosMailboxCount: 0, returning block type: eos
```
@ankitsultana let's discuss a potential solution for this
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